Home / 19,710.46-27,200.40-12,636.88

Finding the Fourth Proportional to 19,710.46, 27,200.40 and 12,636.88

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Solution

The fourth proportional to 19,710.46, 27,200.40 and 12,636.88 is: 17,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,710.46 : 27,200.40 = 12,636.88 : x
  2. Step 2: Convert to fraction form
    19,710.46/27,200.40 = 12,636.88/x
  3. Step 3: Cross multiply
    19,710.46x = 27,200.40 × 12,636.88
  4. Step 4: Simplify right side
    19,710.46x = 343,728,190.75
  5. Step 5: Solve for x
    x = 343,728,190.75/19,710.46
  6. Step 6: Final answer
    x = 17,438.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.